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IGR J16318-4848: An X-ray Source in a Dense Envelope?

Gilfanov, M. R.; Sunyaev, R. A.; Sazonov, S. Yu. +1 more

We analyze in detail the ASCA observations of the hard X-ray source IGR J16318-4848, which was recently discovered by the INTEGRAL observatory (Courvoisier et al. 2003). The source has an anomalously hard spectrum in the energy range 0.5-10 keV and is virtually undetectable below 4 keV because of strong photoabsorption (n_H L > 4 x 10²³

The First Results of Observations of the Transient Pulsar SAX J2103.5+4545 by the INTEGRAL Observatory

Lutovinov, A. A.; Revnivtsev, M. G.; Molkov, S. V.

We present the preliminary results of our analysis of the observations of the X-ray pulsar SAX J2103.5+4545 by the INTEGRAL Observatory in December 2002. We mapped this region of the sky in a wide energy range, from 3 to 200 keV. The detection of the source is shown to be significant up to energies of ~100 keV. The hard X-ray flux in the energy ra…

Possibilities for Detecting Extinct Radio Pulsars

Beskin, V. S.; Yeliseyeva, S. A.

We explore the possibilities for detecting pulsars that have ceased to radiate in the radio band. We consider two models: the model with hindered particle escape from the pulsar surface [first suggested by Ruderman and Sutherland (1975)] and the model with free particle escape (Arons 1981; Mestel 1999). In the model with hindered particle escape, …